Income (loss) per common share (Diluted 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 (loss) available to common stockholders, from continuing operations	1,140	(3,231)
Income (loss) from discontinued operations, net of tax	94	(128)	251	(241)
Income (loss) available to common stockholders	$ 1,234	$ (3,359)	$ (3,552)	$ (18,025)
Weighted average common shares outstanding
Weighted average outstanding shares of common stock (shares)	13,750,400	13,178,143	13,637,462	12,937,474
Redeemable Class C Convertible Preferred stock (shares)	4,454,889	0
Nonvested shares (shares)	565,241	0
Options to purchase common stock (shares)	117,147	0
Weighted average shares and dilutive shares (shares)	18,887,677	13,178,143	13,637,462	12,937,474
Diluted 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)
Diluted EPS (dollars per share)	$ 0.07	$ (0.25)