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v3.19.1

Stock Based Compensation, Stock Option Activity (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ 68,593 | $ 137,000
Options outstanding [Roll Forward] |  |
Outstanding at beginning of period (in shares) | 13,278 | 20,265
Granted (in shares) | 0 | 0
Exercised (in shares) | 0 | (2,631)
Expired (in shares) | 0 | 0
Outstanding at end of period (in shares) | 13,278 | 17,634
Exercisable at end of period (in shares) | 13,278 | 17,634
Weighted average exercise price [Roll forward] |  |
Outstanding at beginning of period (in dollars per share) | $ 11.98 | $ 11.42
Granted (in dollars per share) | 0.00 | 0.00
Exercised (in dollars per share) | 0.00 | 12.55
Expired (in dollars per share) | 0.00 | 0.00
Outstanding at end of period (in dollars per share) | 11.98 | 11.25
Exercisable at end of period (in dollars per share) | $ 11.98 | $ 11.25
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 68,593 | $ 137,000

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(iv)(4) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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=109197908&loc=d3e5070-113901 + Details
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