Equity-Based Compensation | -Based Compensation At June 30, 2017 , we had four active stock-based compensation plans: the Nonemployee Directors’ Stock Retirement Plan (“Directors’ Plan”), the 2004 Omnibus Long-Term Incentive Plan (“2004 Plan”), the 2009 Omnibus Equity and Performance Incentive Plan (“2009 Plan”), and the 2014 Performance & Incentive Plan (“2014 Plan”). Future grants can only be made under the 2014 Plan. The following table summarizes the compensation expense included in selling, general and administrative expenses in the Condensed Consolidated Statements of Earnings related to stock-based compensation plans: Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, 2017 2016 2017 2016 Service-Based RSUs $ 465 $ 436 $ 1,015 $ 948 Performance-Based RSUs 297 213 680 31 Cash-settled RSUs 46 36 (8 ) (12 ) Total $ 808 $ 685 $ 1,687 $ 967 Income tax benefit 304 257 634 363 Net $ 504 $ 428 $ 1,053 $ 604 The following table summarizes the unrecognized compensation expense related to non-vested RSUs by type and the weighted-average period in which the expense is to be recognized: Unrecognized compensation Weighted- expense at average June 30, 2017 period Service-Based RSUs $ 1,297 1.25 Performance-Based RSUs 3,248 2.03 Total $ 4,545 1.81 We recognize expense on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in substance, multiple awards. The following table summarizes the status of these plans as of June 30, 2017 : 2014 Plan 2009 Plan 2004 Plan Directors' Plan Awards originally available 1,500,000 3,400,000 6,500,000 N/A Performance-based options outstanding 315,000 — — — Maximum potential RSU and cash settled awards outstanding 731,143 125,257 57,391 9,620 Maximum potential awards outstanding 1,046,143 125,257 57,391 9,620 RSUs and cash settled awards vested and released 171,118 — — — Awards available for grant 282,739 — — — Stock Options We have no stock options exercisable or outstanding as of June 30, 2017 , other than the performance-based stock options described below. Performance-Based Stock Options During 2015 and 2016, the Compensation Committee of the Board of Directors of the Company (the “Committee”) granted a total of 350,000 performance-based stock option awards (“Performance-Based Option Awards”) for certain employees under the 2014 Plan, of which 315,000 remain outstanding after considering forfeitures. The Performance-Based Option Awards have an exercise price of $18.37 , a term of five years , and generally will become exercisable (provided the optionee remains employed by the Company or an affiliate) upon our attainment of at least $600,000 in revenues during any of our four -fiscal-quarter trailing periods (as determined by the Committee) during the term. We have not recognized any expense on these Performance-Based Option Awards for the six -month periods ended June 30, 2017 and 2016 , since the revenue target was not deemed likely to be attained based on our current forecast. Service-Based Restricted Stock Units The following table summarizes the service-based RSU activity as of and for the six months ended June 30, 2017 : Six Months Ended June 30, 2017 Units Weighted Outstanding at January 1, 2017 554,478 $ 13.37 Granted 33,040 23.00 Vested and released (197,439 ) 13.75 Forfeited (4,141 ) 17.40 Outstanding at June 30, 2017 385,938 $ 13.95 Releasable at June 30, 2017 228,290 $ 11.42 Performance and Market-Based Restricted Stock Units The following table summarizes the performance and market-based RSU activity as of and for the six months ended June 30, 2017 : Units Weighted Outstanding at January 1, 2017 201,900 $ 16.48 Granted 123,919 23.83 Attained by performance 15,285 21.66 Released (41,264 ) 21.66 Forfeited (15,070 ) 21.66 Outstanding at June 30, 2017 284,770 $ 18.99 Releasable at June 30, 2017 2,011 $ 21.66 The following table summarizes each grant of performance awards outstanding at June 30, 2017 . Description Grant Date Vesting Year Vesting Dependency Target Units Outstanding Maximum Number of Units to be Granted 2015 - 2017 Performance RSUs February 5, 2015 2017 35% RTSR, 35% sales growth, 30% cash flow 62,000 124,000 2016 - 2018 Performance RSUs February 16, 2016 2018 35% RTSR, 35% sales growth, 30% cash flow 92,840 185,680 2017 - 2019 Performance RSUs February 9, 2017 2019 35% RTSR, 35% sales growth, 30% cash flow 78,341 156,682 2017 - 2019 Performance RSUs February 9, 2017 2018 - 2020 Operating Income 45,578 45,578 Single Crystal Performance RSUs March 31, 2016 2018 Various 4,000 8,000 Cash-Settled Restricted Stock Units Cash-Settled RSUs entitle the holder to receive the cash equivalent of one share of common stock for each unit when the unit vests. These RSUs are issued to key employees residing in foreign locations as direct compensation. Generally, these RSUs vest over a three-year period. Cash-Settled RSUs are classified as liabilities and are remeasured at each reporting date until settled. At June 30, 2017 and June 30, 2016 we had 15,522 and 12,074 cash-settled RSUs outstanding, respectively. At June 30, 2017 and June 30, 2016 , liabilities of $ 161 and $ 82 , respectively were included in Accrued liabilities on our Condensed Consolidated Balance Sheets. |