Consolidated Statements of Changes in Stockholders’ Equity (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Total
Beginning Balance at Dec. 31, 2011	$ 1,122	$ 45,685	$ 9,402	$ 56,209
Beginning Balance (in shares) at Dec. 31, 2011	11,215,658
Increase (Decrease) in Stockholders' Equity
Net loss			(10,327)	(10,327)
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes	6	1,305		1,311
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes (in shares)	63,610
Dividends declared and paid on preferred stock		(1,585)	(2,138)	(3,723)
Ending Balance at Dec. 31, 2012	1,128	45,405	(3,063)	43,470
Ending Balance (in shares) at Dec. 31, 2012	11,279,268
Increase (Decrease) in Stockholders' Equity
Net loss			(13,073)	(13,073)
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes	17	620		637
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes (in shares)	173,205
Dividends declared and paid on preferred stock		(3,723)		(3,723)
Ending Balance at Dec. 31, 2013	1,145	42,302	(16,136)	27,311
Ending Balance (in shares) at Dec. 31, 2013	11,452,473
Increase (Decrease) in Stockholders' Equity
Net loss			(7,585)	(7,585)
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes	80	665		745
Stock-based compensation expense, exclusive of amounts withheld for payroll taxes (in shares)	795,154
Dividends declared and paid on preferred stock		(3,723)		(3,723)
Issuance of common stock, net of expenses	202	3,956		4,158
Issuance of common stock, net of expenses (in shares)	2,018,826
Ending Balance at Dec. 31, 2014	$ 1,427	$ 43,200	$ (23,721)	$ 20,906
Ending Balance (in shares) at Dec. 31, 2014	14,266,453