Stockholder's Equity (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity

Schedule of restricted stock units

	Shares			Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2012		248,951		$	17
Granted		124,636			16
Vested		(116,711	)		20
Forfeited		(33,652	)		18
Nonvested at December 31, 2012		223,224			15
Granted		181,330			20
Vested		(120,902	)		15
Forfeited		(22,918	)		17
Nonvested at December 31, 2013		260,734			18
Granted		155,146			31
Vested		(157,794	)		21
Forfeited		(12,334	)		25
Nonvested at December 31, 2014		245,752		$	27