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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jul. 26, 2018
Earnings Per Share [Line Items] |  |  |  |
Share repurchase program |  |  |  | $ 20,000
Stock repurchased during period (in shares) |  | 92,987 |  |
Purchase shares under the repurchase program | $ 20,000 |  |  |
Common stock at a weighted-average price (in dollars per share) |  | $ 32.90 |  |
Payments for repurchase of common stock | $ 1,043 | $ 3,058 | $ 101,483 |
Shares Repurchased Under Stock Compensation Program [Member] |  |  |  |
Earnings Per Share [Line Items] |  |  |  |
Stock repurchased during period (in shares) | 32,857 | 57,649 |  |
Stock repurchased during period, values | $ 1,000 | $ 2,200 |  |
Share Repurchase Program [Member] |  |  |  |
Earnings Per Share [Line Items] |  |  |  |
Stock repurchased during period (in shares) |  | 35,338 |  |
Payments for repurchase of common stock |  | $ 800 |  |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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