Restricted Stock Units Restricted Stock Units (Notes)

3 Months Ended

Mar. 31, 2016

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 $9 million and $8 million for the three months ended March 31, 2016 and 2015, respectively. A summary of RSUs issued in the three months ended March 31, 2016 and 2015 follows:

($ in thousands)

Fair Value

Three months ended March 31,