Restricted Stock Units

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Pursuant to its stock incentive plan, the Company may issue restricted stock units ("RSUs") to employees of the Company and its subsidiaries. The RSUs generally vest three to five years from the award date and are subject to other vesting and forfeiture provisions contained in the award agreement. RSUs are expensed pro-ratably over the vesting period. RSU expenses were $18 million and $21 million for the six months ended June 30, 2018 and 2017, respectively. A summary of RSUs issued in the six months ended June 30, 2018 and 2017 follows:



($ in thousands)	Units	Fair Value
2018	13,025	$	963
2017	6,020	$	405