Income Taxes Provision for income taxes charged to operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current tax expense	$ 2,606	$ 1,160	$ 2,315
Deferred tax expense (benefit)	109	1,181	(384)
Total income tax expense	$ 2,715	$ 2,341	$ 1,931