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Stock-Based Compensation And Stock Repurchases (Tables) | 6 Months Ended
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Jun. 30, 2019
Stock-Based Compensation And Stock Repurchases [Abstract] |
Schedule Of Fair Value Of Options, Weighted Average Assumptions |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿ |  | Six Months Ended June 30,
﻿ |  | 2019 |  | 2018
﻿Stock option exercise price |  | $ | 16.12 |  | $ | 16.40
﻿Risk-free interest rate |  |  | 2.42% |  |  | 2.56%
﻿Expected dividend yield |  |  | — |  |  | —
﻿Expected option life in years |  |  | 3.75 |  |  | 3.75
﻿Expected volatility |  |  | 23.32% |  |  | 24.99%
﻿Weighted average fair value |  | $ | 3.50 |  | $ | 3.80
﻿
Schedule Of Stock Options Outstanding And Exercisable |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  | Outstanding Stock Options - Class A Shares
﻿ |  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Years of Contractual Life |  | Aggregate Intrinsic Value
﻿ |  | Class A |  | Class A |  | Class A |  | Class A
﻿Balance - December 31, 2017 |  | 524,589 |  | $ | 12.50 |  | 3.15 |  | $ | 3,054,325
﻿Granted |  | 126,840 |  |  | 16.40 |  | — |  |  | —
﻿Exercised |  | (60,000) |  |  | 6.02 |  | — |  |  | 610,249
﻿Forfeited |  | (4,960) |  |  | 12.08 |  | — |  |  | —
﻿Balance - December 31, 2018 |  | 586,469 |  | $ | 14.01 |  | 2.88 |  | $ | 1,530,528
﻿Granted |  | 219,408 |  |  | 16.12 |  | — |  |  | —
﻿Exercised |  | (67,500) |  |  | 13.42 |  | — |  |  | 185,175
﻿Forfeited |  | (25,000) |  |  | 13.42 |  | — |  |  | —
﻿Balance - June 30, 2019 |  | 713,377 |  | $ | 14.74 |  | 3.27 |  | $ | 866,682
﻿
Schedule Of Restricted Stock Units Issued And Vested |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Outstanding Restricted Stock Units
﻿ |  | RSU Grants (in units) |  |  |  | Vested, |  | Unvested, |  | Forfeited,
﻿Grant Date |  | Directors |  | Management |  | Total Grants |  | June 30, 2019 |  | June 30, 2019 |  | June 30, 2019
﻿March 10, 2016 |  | 35,147 |  | 27,381 |  | 62,528 |  | 55,684 |  | 6,844 |  |
﻿April 11, 2016 |  | — |  | 5,625 |  | 5,625 |  | 3,962 |  | 1,146 |  | 517
﻿March 23, 2017 |  | 30,681 |  | 32,463 |  | 63,144 |  | 46,919 |  | 16,225 |  |
﻿August 29, 2017 |  | — |  | 7,394 |  | 7,394 |  | 3,698 |  | 3,696 |  |
﻿January 2, 2018 |  | 29,393 |  | — |  | 29,393 |  | 29,393 |  | — |  |
﻿April 12, 2018 |  | — |  | 29,596 |  | 29,596 |  | 7,409 |  | 22,187 |  |
﻿April 13, 2018 |  | — |  | 14,669 |  | 14,669 |  | 3,668 |  | 11,001 |  |
﻿July 6, 2018 |  | — |  | 932 |  | 932 |  | — |  | — |  | 932
﻿November 7, 2018 |  | 23,010 |  | — |  | 23,010 |  | 23,010 |  | — |  |
﻿March 13, 2019 |  | — |  | 24,366 |  | 24,366 |  | — |  | 24,366 |  |
﻿March 14, 2019 |  | — |  | 23,327 |  | 23,327 |  | — |  | 23,327 |  |
﻿May 7, 2019 |  | 11,565 |  | — |  | 11,565 |  | — |  | 11,565 |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿Total |  | 129,796 |  | 165,753 |  | 295,549 |  | 173,743 |  | 120,357 |  | 1,449
﻿

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- 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
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- 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=109197908&loc=d3e5070-113901 + Details
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