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Subsequent Events (Details) - USD ($) | Feb. 28, 2018 | Feb. 15, 2018 | May 03, 2017 | Mar. 21, 2016
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Subsequent Events |  |  |  |
Amount of stock authorized to repurchase |  |  | $ 20,000,000 | $ 20,000,000
Subsequent Events |  |  |  |
Subsequent Events |  |  |  |
Amount of stock authorized to repurchase |  | $ 20,000,000 |  |
Common stock quarterly cash dividend declared (in dollars per share) |  | $ 0.17 |  |
Subsequent Events | New York, New York |  |  |  |
Subsequent Events |  |  |  |
Lease termination fee | $ 525,000 |  |  |
Long term lease obligations reduced | $ 2,700,000 |  |  |
Remaining lease term | 9 years |  |  |

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- Definition Remaining term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of fee on termination of lease before expiration of lease term. + 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 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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- Details
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