Related Parties	9 Months Ended
Sep. 30, 2017
Related Party Transactions [Abstract]
Related Parties	Related Parties At September 30, 2017 and December 31, 2016, the Company had no amounts receivable or payable to related parties. The Company subleases airplane and office space to a firm owned by the Chairman of the Company. The Company recognized rent reimbursements of $0.02 million and for each of the three month periods ended September 30, 2017 and 2016, respectively, and $0.06 million and $0.05 million for the nine month periods ended September 30, 2017 and 2016, respectively, which are included as a reduction of occupancy and equipment rental on the condensed consolidated statements of income. On September 25, 2017, the Company's Chairman, through an entity controlled by him, and the Company's Chief Executive Officer, in his personal capacity and through an entity controlled by him, each entered into a Subscription Agreement for the purchase of $10.0 million, for an aggregate total of $20.0 million, of the Company's common stock at the final price per share of the Company’s recently completed tender offer. The funding of the purchases by the Chairman and Chief Executive Officer occurred on November 9, 2017, the 11th trading day following the expiration date of the tender offer, and a total of 1,159,420 common shares were issued. See "Note 8 — Equity" and "Note 12 — Subsequent Events".

Related Parties

At September 30, 2017 and December 31, 2016, the Company had no amounts receivable or payable to related parties.

The Company subleases airplane and office space to a firm owned by the Chairman of the Company. The Company recognized rent reimbursements of $0.02 million and for each of the three month periods ended September 30, 2017 and 2016, respectively, and $0.06 million and $0.05 million for the nine month periods ended September 30, 2017 and 2016, respectively, which are included as a reduction of occupancy and equipment rental on the condensed consolidated statements of income.

On September 25, 2017, the Company's Chairman, through an entity controlled by him, and the Company's Chief Executive Officer, in his personal capacity and through an entity controlled by him, each entered into a Subscription Agreement for the purchase of $10.0 million, for an aggregate total of $20.0 million, of the Company's common stock at the final price per share of the Company’s recently completed tender offer. The funding of the purchases by the Chairman and Chief Executive Officer occurred on November 9, 2017, the 11th trading day following the expiration date of the tender offer, and a total of 1,159,420 common shares were issued. See "Note 8 — Equity" and "Note 12 — Subsequent Events".