Loan Agreement Quarterly Financial Covenants (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Required Minimum Value [Member]
Schedule of minimum EBITDA level achievable on quarterly basis
MinTangibleNetWorth	$ 45,000
Actual Value [Member]
Schedule of minimum EBITDA level achievable on quarterly basis
MinTangibleNetWorth	$ 48,570
Maximum | Required Minimum Value [Member]
Line of Credit Facility [Line Items]
EBITDA to Fixed Charges	1.10
Maximum | Actual Value [Member]
Line of Credit Facility [Line Items]
EBITDA to Fixed Charges	2.62
Minimum | Required Minimum Value [Member]
Line of Credit Facility [Line Items]
EBITDA to Fixed Charges	1.00
Minimum | Actual Value [Member]
Line of Credit Facility [Line Items]
EBITDA to Fixed Charges	1.00