Income Taxes Components of the provision for income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of the provision for income taxes [Line Items]
Current tax provision	$ 1,838	$ 2,010	$ 1,281
Deferred tax provision (benefit)	341	(37)	581
Provision for income taxes	$ 2,179	$ 1,973	$ 1,862