Stockholder's Equity (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Treasury Stock Activity

The following represents the activity relating to the treasury stock held by the Company during the nine months endedSeptember 30, 2017:

	Treasury stock shares	Cost (dollars in thousands)		Average cost per share
Balance outstanding at December 31, 2016	9,810,802	$	153,845	$	15.68
Shares purchased for minimum tax withholding under the Equity Plan or other similar transactions	791,727	11,433		14.44
Purchase of treasury stock	—	—		—
Balance outstanding at September 30, 2017	10,602,529	$	165,278	$	15.59