Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The reconciliations of the denominators of the basic and diluted earnings (loss) per share computations are as follows (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Weighted-average common shares outstanding—basic	78,183	75,935	78,154	75,772
Dilutive effect of potential common shares	1,868	—	1,588	121
Weighted-average common shares outstanding—diluted	80,051	75,935	79,742	75,893