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Employee Benefit Plans (Summary of Stock Option Activity) (Details) - Officer and Employee Plans [Member] - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Number |  |
Outstanding (in shares) | 316,574 | 717,524
Granted (in shares) | 0 | 0
Exercised (in shares) | (132,783) | (506,923)
Forfeited (in shares) | (13,166) | (24,496)
Capstone options assumed in business combination (in shares) |  | 130,469
Outstanding (in shares) | 170,625 | 316,574
Weighted Average Exercisable Price |  |
Weighted Average Exercisable Price, Outstanding (in dollars per share) | $ 11.82 | $ 10.57
Weighted Average Exercisable Price Granted (in dollars per share) | 0.00 | 0.00
Weighted Average Exercisable Price Exercised (in dollars per share) | 11.39 | 9.64
Weighted Average Exercisable Price Forfeited (in dollars per share) | 31.96 | 19.90
Weighted Average Exercisable Price, Capstone options assumed in business combination (in dollars per share) |  | 11.76
Weighted Average Exercise Price, Outstanding (in dollars per share) | $ 10.61 | $ 11.82

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- Definition It represents the share based compensation arrangements by share based payment award options retained by in merger weighted average exercise price. + References No definition available. + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + 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)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance 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)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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