Accounts Receivable (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts Receivable [Line Items]
Balance at beginning of period	$ 1,179	$ 1,132	$ 1,305
Less: Reduction in (provision for) allowances	528	(96)	159
Less: Write offs, net of recoveries	275	49	14
Balance at end of period	$ 376	$ 1,179	$ 1,132