Acquisition (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Aug. 01, 2015	Dec. 31, 2014
Acquisition [Abstract]
Cash		$ 10
Deferred tax assets		653
Goodwill	$ 64,059	5,945	$ 58,114
Identifiable intangible assets		7,515
Other assets		202
Total assets acquired		14,325
Contingent consideration liability		2,904
Deferred tax liabilities		2,803
Other liabilities		1,507
Total liabilities assumed		7,214
Net assets acquired		$ 7,111