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Employee Benefit Plans (FY) (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Number |  |
Shares, Capstone options assumed in business combination | 130,469 |
Weighted Average Exercisable Price |  |
Weighted Average Exercisable Price, Capstone options assumed in business combination (in dollars per share) | $ 11.76 |
Officer and Employee Plans [Member] |  |
Number |  |
Shares, Outstanding | 717,524 | 817,414
Shares, Granted | 0 | 0
Shares, Exercised | (506,923) | (89,556)
Shares, Forfeited | (24,496) | (10,334)
Shares, Outstanding | 316,574 | 717,524
Weighted Average Exercisable Price |  |
Weighted Average Exercisable Price, Outstanding (in dollars per share) | $ 10.57 | $ 10.62
Weighted Average Exercisable Price Granted (in dollars per share) | 0 | 0
Weighted Average Exercisable Price Exercised (in dollars per share) | 9.64 | 8.98
Weighted Average Exercisable Price Forfeited (in dollars per share) | 19.90 | 28.49
Weighted Average Exercise Price, Outstanding (in dollars per share) | $ 11.82 | $ 10.57

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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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