XML 64 R46.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of the Company's Stock Option Activity | A summary of the Company’s stock option activity is as follows ( the weighted average exercise price per share has been adjusted for the Spin-Off and November 2017 1-for-4 reverse stock split):
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value |
Options outstanding as of January 1, 2016 |  |  | 1,397,571 |  |  | $ | 15.51 |  |  |  |  |
Granted |  |  | 439,741 |  |  |  | 17.20 |  |  |  |  |
Exercised |  |  | (712,514 | ) |  |  | 13.09 |  |  |  |  |
Forfeited |  |  | (97,842 | ) |  |  | 16.38 |  |  |  |  |
Cancelled |  |  | (61,056 | ) |  |  | 18.68 |  |  |  |  |
Options outstanding as of December 31, 2016 |  |  | 965,900 |  |  |  | 17.76 |  |  |  |  |
Granted |  |  | 273,800 |  |  |  | 25.68 |  |  |  |  |
Exercised |  |  | (258,699 | ) |  |  | 19.86 |  |  |  |  |
Forfeited |  |  | (78,100 | ) |  |  | 20.16 |  |  |  |  |
Cancelled |  |  | (26,536 | ) |  |  | 27.29 |  |  |  |  |
Options outstanding as of December 31, 2017 |  |  | 876,365 |  |  | $ | 19.13 |  |  | $ | 17.8 |
Options exercisable as of: |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017 |  |  | 372,206 |  |  | $ | 15.97 |  |  | $ | 8.7 |
Schedule of the Assumptions Used to Estimate the Fair Value of Each Option Grant | The fair value of each option grant was estimated at the date of grant using the Black-Scholes option-pricing method with the following assumptions:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Expected Life (years) |  |  | 6.5 |  |  |  | 6.5 |  |  |  | 6.0 |
Risk-free Interest rate |  |  | 2.2 | % |  |  | 1.6 | % |  |  | 1.8 | %
Expected volatility |  |  | 45.0 | % |  |  | 45.0 | % |  |  | 56.0 | %
Expected dividend yield |  |  | — | % |  |  | — | % |  |  | 0.3 | %
Restricted Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Nonvested Share Activity | A summary of activity for restricted stock awards for the year ended December 31, 2017 is as follows:
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested as of January 1, 2017 |  |  | 39,028 |  |  | $ | 86.92 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | (11,058 | ) |  |  | 86.92 |
Forfeited |  |  | (5,544 | ) |  |  | 86.92 |
Unvested as of December 31, 2017 |  |  | 22,426 |  |  | $ | 86.92 |
Performance Shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Nonvested Share Activity | A summary of activity for restricted stock units for the year ended December 31, 2017 is as follows:
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested as of January 1, 2017 |  |  | 465,117 |  |  | $ | 44.08 |
Granted |  |  | 267,902 |  |  |  | 25.87 |
Vested |  |  | (72,891 | ) |  |  | 96.59 |
Forfeited |  |  | (66,029 | ) |  |  | 27.72 |
Unvested as of December 31, 2017 |  |  | 594,099 |  |  | $ | 29.18 |

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |