Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net - Summary of Intangible Assets (Detail)

v3.4.0.3
Intangible Assets, Net - Summary of Intangible Assets (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Cost, beginning balance $ 25,027 $ 19,223 $ 19,223
Acquisition of Jamison     5,804
Cost, ending balance 25,027   25,027
Accumulated amortization, beginning balance (9,696) (8,056) (8,056)
Amortization expense (486) (323) (1,640)
Accumulated amortization, ending balance (10,182)   (9,696)
Net book value $ 14,845   15,331
Minimum      
Useful lives 3 years    
Maximum      
Useful lives 20 years    
Customer Relationships      
Cost, beginning balance $ 22,560 17,560 17,560
Acquisition of Jamison     5,000
Cost, ending balance 22,560   22,560
Accumulated amortization, beginning balance (8,062) (6,627) (6,627)
Amortization expense (415)   (1,435)
Accumulated amortization, ending balance (8,477)   (8,062)
Net book value $ 14,083   $ 14,498
Customer Relationships | Minimum      
Useful lives 10 years   10 years
Customer Relationships | Maximum      
Useful lives 20 years   20 years
Other Intangible Assets      
Cost, beginning balance $ 2,467 1,663 $ 1,663
Acquisition of Jamison     804
Cost, ending balance 2,467   2,467
Accumulated amortization, beginning balance (1,634) $ (1,429) (1,429)
Amortization expense (71)   (205)
Accumulated amortization, ending balance (1,705)   (1,634)
Net book value $ 762   $ 833
Other Intangible Assets | Minimum      
Useful lives 3 years   3 years
Other Intangible Assets | Maximum      
Useful lives 5 years   5 years