Income (loss) per common share (Basic EPS) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 1,884	$ (2,109)	$ (2,330)	$ (10,562)
Redeemable Class B Senior Preferred stock deemed dividend	(744)	(1,122)	(1,473)	(2,222)
Income from continuing operations allocated to participating securities	(279)	0
Income (loss) available to common stockholders, from continuing operations	861	(3,231)
Income (loss) from discontinued operations, net of tax	94	(128)	251	(241)
Income from discontinued operations allocated to participating securities	(23)	0
Income (loss) available to common stockholders, from discontinued operations	71	(128)
Income (loss) available to common stockholders	$ 932	$ (3,359)
Weighted average outstanding shares of common stock (shares)	13,750,400	13,178,143	13,637,462	12,937,474
Basic EPS
Income (loss) from continuing operations (dollars per share)	$ 0.06	$ (0.24)
Income (loss) from discontinued operations (dollars per share)	$ 0.01	$ (0.01)
Basic EPS (dollars per share)	$ 0.07	$ (0.25)