Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Lease Obligations) (Details)

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Commitments and Contingencies (Lease Obligations) (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]    
Rent expense $ 272,000 $ 309,000
Sub lease income $ 96,000 $ 90,000