Income Tax (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Summary of components of income tax expense
Current	$ 799	$ 3,048	$ 2,543	$ 5,232
Deferred	(75)	(1,982)	(79)	(1,885)
Income tax expense	$ 724	$ 1,066	$ 2,385	$ 3,270