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Business Segment Information - Reconciliation of Reportable Segment Amounts (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Segment operating income | $ (1,850) | $ (4,612) | $ (5,561) | $ (7,945) |
Corporate payroll and benefits | (2,033) | (3,956) | (4,215) | (7,759) |
Corporate rent and occupancy | (255) | (632) | (300) | (1,026) |
Corporate legal and professional fees | (1,219) | (1,982) | (2,254) | (4,965) |
Corporate general and administrative | (809) | (1,346) | (2,072) | (2,092) |
Corporate depreciation and amortization | (118) | (223) | (600) | (454) |
Other income (expense), net | 7 | (279) | 16 | 2,680 |
Income tax expense | (3,642) | (99) | (9,028) | (152) |
Net income | 6,408 | 7,860 | 15,096 | 12,236 | $ 97,700
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Segment operating income | 13,020 | 16,317 | 28,318 | 28,761 |
Segment Reconciling Items |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Corporate payroll and benefits | (1,343) | (2,866) | (3,153) | (5,912) |
Corporate rent and occupancy | (91) | (272) | (117) | (501) |
Corporate legal and professional fees | (1,129) | (1,982) | (2,127) | (4,909) |
Corporate general and administrative | (797) | (1,373) | (1,656) | (2,146) |
Corporate depreciation and amortization | (51) | (128) | (258) | (258) |
Corporate interest (expense) income, net | (59) | (1,214) | (283) | (2,121) |
Other income (expense), net | 500 | (523) | 3,400 | (526) |
Income tax expense | $ (3,642) | $ (99) | $ (9,028) | $ (152) |

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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