Silvercrest Asset Management Group LLC Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Summary of Intangible Assets (Detail)

Intangible Assets - Summary of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Cost, beginning balance	$ 19,223	$ 17,476
Acquisition of certain assets of Ten-Sixty		1,747
Cost, ending balance	19,223	19,223
Accumulated amortization, beginning balance	(6,634)	(5,113)
Amortization expense	(1,422)us-gaap_AmortizationOfIntangibleAssets	(1,521)us-gaap_AmortizationOfIntangibleAssets
Accumulated amortization, ending balance	(8,056)	(6,634)
Net book value	11,167	12,589
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	15,910
Acquisition of certain assets of Ten-Sixty		1,650
Cost, ending balance	17,560	17,560
Accumulated amortization, beginning balance	(5,410)	(4,238)
Amortization expense	(1,217)	(1,172)
Accumulated amortization, ending balance	(6,627)	(5,410)
Net book value	10,933	12,150
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	1,566
Acquisition of certain assets of Ten-Sixty		97
Cost, ending balance	1,663	1,663
Accumulated amortization, beginning balance	(1,224)	(875)
Amortization expense	(205)	(349)
Accumulated amortization, ending balance	(1,429)	(1,224)
Net book value	$ 234	$ 439
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