XML 46 R32.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Weighted Average Assumptions Used in Estimating Fair Value of Stock Options |
|  | As of December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Valuation assumptions: |  |  |  |  |  |  |  |  |  |  |  |
Expected dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
Expected volatility |  |  | 40.78 | % |  |  | 37.60 | % |  |  | 39.37 | %
Expected term (years) |  |  | 5.96 |  |  |  | 5.86 |  |  |  | 6.06 |
Risk-free interest rate |  |  | 2.1 | % |  |  | 2.6 | % |  |  | 1.9 | %
Summary of Outstanding Stock Option Activity | A summary of the Company’s stock option activity is as follows (shares in thousands):
|  | Number of shares |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term |
Balance at December 31, 2018 |  |  | 1,407 |  |  | $ | 8.73 |  |  |  |  |
Granted |  |  | 782 |  |  |  | 11.77 |  |  |  |  |
Exercised |  |  | (176 | ) |  |  | 4.20 |  |  |  |  |
Expired/Forfeited |  |  | (413 | ) |  |  | 11.45 |  |  |  |  |
Balance at December 31, 2019 |  |  | 1,600 |  |  |  | 9.98 |  |  |  | 7.8 |
Vested and exercisable at December 31, 2019 |  |  | 746 |  |  | $ | 8.39 |  |  |  | 6.6 |
Vested and expected to vest at December 31, 2019 |  |  | 1,600 |  |  | $ | 9.98 |  |  |  | 7.8 |
Summary of Outstanding Restricted Stock Unit Activity | The following table summarizes the Company’s Restricted Stock Unit activity (shares in thousands):
|  | Restricted stock units |  |  | Weighted average grant date fair value |
Non-vested balance at December 31, 2018 |  |  | 4 |  |  | $ | 13.67 |
Grants |  |  | 96 |  |  |  | 11.35 |
Vested |  |  | (1 | ) |  |  | 13.67 |
Forfeitures |  |  | (18 | ) |  |  | 11.35 |
Non-vested balance at December 31, 2019 |  |  | 80 |  |  |  | 11.43 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration