XML 39 R28.htm IDEA: XBRL DOCUMENT
v3.19.2

Stock Options (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Outstanding Stock Option Activity | The following table summarizes the outstanding stock option activity during the periods indicated:
|  |  |  |  |  | Weighted average |
|  | Number of shares |  |  | Exercise price |  |  | Remaining contractual term (years) |
Balance at December 31, 2018 |  |  | 1,407,049 |  |  | $ | 8.73 |  |  |  |  |
Granted |  |  | 395,485 |  |  |  | 11.39 |  |  |  |  |
Exercised |  |  | (128,461 | ) |  |  | 4.58 |  |  |  |  |
Expired/Forfeited |  |  | (120,904 | ) |  |  | 10.89 |  |  |  |  |
Balance at June 30, 2019 |  |  | 1,553,169 |  |  | $ | 9.58 |  |  |  | 8.1 |
Vested and exercisable at June 30, 2019 |  |  | 701,862 |  |  | $ | 8.19 |  |  |  | 7.1 |
Vested and expected to vest at June 30, 2019 |  |  | 1,553,169 |  |  | $ | 9.58 |  |  |  | 8.1 |

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 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=109197908&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=109197908&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=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration