Liquidity and Going Concern - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015	Mar. 01, 2015
Line of Credit Facility [Line Items]
Cash	$ 1,110,000	$ 2,031,000		$ 1,140,000	$ 1,764,000
Working capital deficit	8,658,000
Restricted cash and cash equivalents, current	18,000			$ 18,000
Net loss	668,000	712,000
Net cash provided by operating activities	18,000	358,000
Cash paid during the period for interest	$ 266,000	$ 281,000
Main Street Capital Corporation
Line of Credit Facility [Line Items]
Common shares owned by stockholder (in shares)	7,711,517
Common shares owned, stockholder, percentage	21.00%
Comerica Term Loan
Line of Credit Facility [Line Items]
Debt instrument, principal payment as percentage of excess cash flow, percentage	50.00%
Note with SRS | Promissory Note
Line of Credit Facility [Line Items]
Stated interest rate, percentage						15.00%
Promissory Note with Stockholder Representative | Notes Payable, Other Payables
Line of Credit Facility [Line Items]
Promissory note, outstanding balance	$ 1,785,000
Debt instrument, covenant, cash balance repayment threshold (greater than)	200.00%
Interest payable	$ 653,000
Promissory Note with Stockholder Representative | Notes Payable, Other Payables | Scenario, Forecast
Line of Credit Facility [Line Items]
Interest payable			$ 752,000
Senior secured term loan facility
Line of Credit Facility [Line Items]
Stated interest rate, percentage	12.00%
Senior secured term loan facility | Main Street Capital Corporation
Line of Credit Facility [Line Items]
Revolving loan facility, maximum borrowing capacity	$ 11,000,000
Outstanding borrowing, Main Street Term Loan	9,000,000
Senior secured revolving loan facility | Main Street Capital Corporation
Line of Credit Facility [Line Items]
Revolving loan facility, maximum borrowing capacity, not available during default	$ 2,000,000