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Equity Incentive Awards (Tables) | 12 Months Ended
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Dec. 31, 2018
Equity Incentive Awards [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity |
|  | 2018 |  | 2017 |  | 2016
(in thousands, except exercise price data) |  | Options |  | Weighted Average Exercise Price |  | Options |  | Weighted Average Exercise Price |  | Options |  | Weighted Average Exercise Price
Outstanding at beginning of year |  | 4,961 |  |  | $ | 11.17 |  |  | 4,834 |  |  | $ | 11.24 |  |  | 4,217 |  |  | $ | 12.35 |
Granted |  | 1,916 |  |  | 10.00 |  |  | 892 |  |  | 14.31 |  |  | 1,370 |  |  | 10.40 |
Exercised |  | (97 | ) |  | 7.55 |  |  | (458 | ) |  | 11.97 |  |  | (495 | ) |  | 12.17 |
Expired |  | (239 | ) |  | 14.21 |  |  | (157 | ) |  | 26.42 |  |  | (195 | ) |  | 27.33 |
Forfeited |  | (389 | ) |  | 12.04 |  |  | (150 | ) |  | 13.84 |  |  | (63 | ) |  | 10.45 |
Outstanding at end of year |  | 6,152 |  |  | 10.68 |  |  | 4,961 |  |  | 11.17 |  |  | 4,834 |  |  | 11.24 |
Exercisable at end of year |  | 3,620 |  |  | $ | 10.72 |  |  | 3,077 |  |  | $ | 10.95 |  |  | 2,727 |  |  | $ | 12.55 |
Schedule of Nonvested Restricted Stock Units Activity |
|  | Shares |  | Weighted Average Grant Date Fair Value
|  | (in thousands) |  |
Outstanding at December 31, 2017 |  | 946 |  |  | $ | 10.50 |
Granted |  | 872 |  |  | 9.79 |
Vested |  | (334 | ) |  | 9.85 |
Forfeited |  | (198 | ) |  | 10.59 |
Outstanding at December 31, 2018 |  | 1,286 |  |  | $ | 10.17 |

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- Definition Equity Incentive Awards [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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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