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Subsequent Events (Details) $ / shares in Units, $ in Thousands, £ in Millions |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Apr. 26, 2018 $ / shares | Apr. 30, 2018 GBP (£) shares | Apr. 30, 2018 USD ($) $ / shares shares | Mar. 31, 2018 USD ($) $ / shares | Apr. 01, 2017 USD ($) $ / shares | May 08, 2018 USD ($)
Subsequent Events |  |  |  |  |  |
Common stock quarterly cash dividend declared (in dollars per share) | $ / shares |  |  |  | $ 0.17 | $ 0.14 |
Borrowings under revolving line of credit |  |  |  | $ 10,000 | $ 6,000 |
Amount available for future repurchases |  |  |  | $ 21,200 |  |
Subsequent Events |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Common stock quarterly cash dividend declared (in dollars per share) | $ / shares | $ 0.17 |  |  |  |  |
Shares repurchased under share repurchase program | shares |  | 215,585 | 215,585 |  |  |
Shares retired under share repurchase program | shares |  | 215,585 | 215,585 |  |  |
Share repurchases, Average price per share (in dollars per share) | $ / shares |  |  | $ 55.99 |  |  |
Amount available for future repurchases |  |  |  |  |  | $ 9,100
Subsequent Events | Revolving credit facility | United States |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Borrowings under revolving line of credit |  |  | $ 13,000 |  |  |
Period of the borrowing is expected to be repaid |  | 12 months | 12 months |  |  |
Subsequent Events | Revolving credit facility | United Kingdom |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Borrowings under revolving line of credit | £ |  | £ 5.0 |  |  |  |
Period of the borrowing is expected to be repaid |  | 12 months | 12 months |  |  |

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- Definition Period of time expected to be repaid under the term of the credit facility agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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- Definition Number of shares of common and preferred stock retired from treasury during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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