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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-Based Compensation |
5. | STOCK-BASED COMPENSATION
On June 30, 2017, the Company had stock options and stock awards outstanding under its 2006 Incentive Compensation Plan and stock options, stock awards and stock appreciation rights (SARs) outstanding under its 2011 Incentive Compensation Plan. SARs granted prior to 2015 are cash-settled, and SARs granted after 2014, including the 2017 grant, are stock-settled. Stock options and SARs granted prior to 2017 cliff vest after two years. Stock options and SARs granted in 2017 have a three-year graded vesting feature, with one-third of the awards vesting each year. The Company has elected the straight-line method of expense attribution for the stock options and SARs with the graded vesting feature. Compensation expense recorded for all stock options, stock awards and SARs was as follows:
(In thousands) |
Three Months Ended June 30 |  |  | Six Months Ended June 30 |
2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
$ | 3,166 |  |  | $ | 2,025 |  |  | $ | 4,551 |  |  | $ | 4,448 |
The increase in stock-based compensation expense between the three-month periods ended June 30, 2017 and 2016, was primarily attributable to increased compensation related to cash-settled SARs. SARs compensation expense in the second quarter of 2017 was higher than in the second quarter of 2016 due to a greater quarter-over-quarter increase in the market value of Company common stock, which is used to calculate the fair value of SARs. Unrecognized compensation costs for stock options, stock awards and SARs were as follows:
(In thousands) |  | June 30, 2017 |  |  | December 31, 2016 |
Stock options |  | $ | 1,854 |  |  | $ | 895 |
Stock awards |  |  | 6,419 |  |  |  | 5,514 |
SARs |  |  | 3,853 |  |  |  | 1,859 |
The increases in unrecognized compensation costs for stock options, stock awards and SARs reflected the 2017 grants of:
|  | Shares |
Stock options |  |  | 71,434 |
Stock awards (at target) |  |  | 44,599 |
SARs |  |  | 148,723 |
The unrecognized compensation costs at June 30, 2017, are expected to be recognized over weighted-average periods of 2.1 years, 1.8 years and 2.2 years for stock options, stock awards and SARs, respectively.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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