Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of the accounts receivable reserve
Accounts receivable reserve, beginning of period	$ 435	$ 735
Charged to costs and expenses	38	316
Charged to other accounts	(41)	(538)
Write-offs	(201)	(78)
Accounts receivable reserve, end of period	$ 231	$ 435