Stocholders' Equity (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

The following table provides the computation of diluted weighted average number of common shares outstanding:

	Three Months Ended March 31,
	2014	2013
Computation of diluted weighted average shares outstanding:
Basic weighted average shares outstanding	50,788,219	49,504,712
Incremental shares from assumed exercise of stock options and vesting of restricted stock	1,975,431	1,115,725
Diluted weighted average shares outstanding	52,763,650	50,620,437