Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Stock-based compensation expense charged to the Condensed Consolidated Statements of Operations is as follows:

	Three months ended June 30,				Six months ended June 30,
(dollars in thousands)	2013		2012		2013		2012
Stock-based compensation expense	$	1,485	$	1,138	$	2,309	$	1,865