XML 31 R19.htm IDEA: XBRL DOCUMENT
v3.19.2

Stock-Based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Summary of Option Activity | A summary of option activity under our 1998 Stock Option Plan as of December 31, 2018, and changes during the six months ended June 30, 2019 is presented below.
| Number of Stock Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2018 | 283,686 |  | $ | 20.46 |  | 3.58 |  | $ | 434
Exercised | (56,352) |  | 8.97 |  | — |  | 474
Canceled/Forfeited | (3,000) |  | 27.91 |  | — |  | —
Outstanding, June 30, 2019 | 224,334 |  | $ | 23.25 |  | 3.92 |  | $ | 14
Exercisable, June 30, 2019 | 213,901 |  | $ | 23.01 |  | 3.74 |  | $ | 14
Summary of Stock Options Outstanding | The following table summarizes information about our stock options outstanding at June 30, 2019:
Range of Exercise Prices | Options Outstanding |  |  |  |  |  | Options Exercisable |  |
| Shares |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
$0.01-15.70 | 8,500 |  | 2.57 |  | $ | 14.89 |  | 8,500 |  | $ | 14.89
$15.71-17.81 | 42,000 |  | 1.08 |  | 17.54 |  | 42,000 |  | 17.54
$17.82-20.48 | 50,500 |  | 1.84 |  | 19.43 |  | 50,500 |  | 19.43
$20.49-33.36 | 123,334 |  | 5.84 |  | 27.33 |  | 112,901 |  | 27.26
| 224,334 |  | 3.92 |  | $ | 23.25 |  | 213,901 |  | $ | 23.01
Status of Unvested Stock Options | The summary of the status of our unvested stock options as of December 31, 2018 and changes during the six months ended June 30, 2019 is presented below.
Unvested stock options: | Shares |  | Weighted Average Grant Date Fair Value Per Share
Unvested at December 31, 2018 | 20,865 |  | $ | 11.93
Vested | (10,432) |  | 11.93
Unvested at June 30, 2019 | 10,433 |  | $ | 11.93

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 option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
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 change in stock options. + References No definition available. + Details
Name: | us-gaap_ScheduleOfStockOptionsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration