Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

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

	Three months ended June 30, 2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	17,803	82,330	$	0.22
Effect of restricted stock	—		38
Diluted EPS	$	17,803	82,368	$	0.22

	Three months ended June 30, 2017
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	14,616	83,294	$	0.18
Effect of restricted stock	—		44
Diluted EPS	$	14,616	83,338	$	0.18

	Six months ended June 30, 2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	31,182	82,817	$	0.38
Effect of restricted stock	—		38
Diluted EPS	$	31,182	82,855	$	0.38

	Six months ended June 30, 2017
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	28,653	83,293	$	0.34
Effect of restricted stock	—		44
Diluted EPS	$	28,653	83,337	$	0.34