Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Intangible Assets (Detail)

v3.2.0.727
Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]          
Cost, beginning balance     $ 19,223 $ 19,223 $ 19,223
Acquisition of Jamison     5,800    
Cost, ending balance $ 25,023   25,023   19,223
Accumulated amortization, beginning balance     (8,056) (6,634) (6,634)
Amortization expense (323) $ (360) (646) (719) (1,422)
Accumulated amortization, ending balance (8,702)   (8,702)   (8,056)
Net book value 16,321   $ 16,321   11,167
Minimum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     3 years    
Maximum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     20 years    
Customer Relationships          
Finite Lived Intangible Assets [Line Items]          
Cost, beginning balance     $ 17,560 17,560 17,560
Acquisition of Jamison     5,000    
Cost, ending balance 22,560   22,560   17,560
Accumulated amortization, beginning balance     (6,627) (5,410) (5,410)
Amortization expense     (584)   (1,217)
Accumulated amortization, ending balance (7,211)   (7,211)   (6,627)
Net book value 15,349   $ 15,349   $ 10,933
Customer Relationships | Minimum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     10 years   10 years
Customer Relationships | Maximum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     20 years   20 years
Other Intangible Assets          
Finite Lived Intangible Assets [Line Items]          
Cost, beginning balance     $ 1,663 1,663 $ 1,663
Acquisition of Jamison     800    
Cost, ending balance 2,463   2,463   1,663
Accumulated amortization, beginning balance     (1,429) $ (1,224) (1,224)
Amortization expense     (62)   (205)
Accumulated amortization, ending balance (1,491)   (1,491)   (1,429)
Net book value $ 972   $ 972   $ 234
Other Intangible Assets | Minimum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     3 years   3 years
Other Intangible Assets | Maximum          
Finite Lived Intangible Assets [Line Items]          
Useful lives     5 years   5 years