Consolidated Statements of Stockholders' Deficit (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Shares Issued to Lenders [Member] Common Stock [Member]	Shares Issued to Lenders [Member] Additional Paid-in Capital [Member]	Shares Issued to Lenders [Member] Retained Earnings [Member]	Shares Issued to Lenders [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2016					21,768,864
Balance at Dec. 31, 2016					$ 218	$ 355,336	$ (409,871)	$ (54,317)
Issuance of shares to lenders (in shares)	29,706							29,706
Issuance of shares to lenders		$ 433		$ 433
Issuance of shares pursuant to bond conversion (in shares)					212,476			212,476
Issuance of shares pursuant to bond conversion					$ 2	1,519		$ 1,521
Stock-based compensation expense (in shares)					194,639
Stock-based compensation expense					$ 2	1,913		1,915
Net loss and comprehensive loss							(7,227)	(7,227)
Balance (in shares) at Mar. 31, 2017					22,205,685
Balance at Mar. 31, 2017					$ 222	$ 359,201	$ (417,098)	$ (57,675)