Fair Values of Financial Instruments - Narrative (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Maturity of corporate debt with similar credit risk |
20 years
|
|
|
| US treasury bond maturity |
20 years
|
|
|
| Discounted cash flow, discount rate |
8.67%
|
9.41%
|
9.89%
|
| Discounted cash flow, discount rate premium |
1.00%
|
|
|
| Institutional Products Group |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Impairment of finite-lived intangible assets |
|
|
$ 13,041,000
|
| Discounted cash flow sensitivity analysis discount rate rncrease |
1.00%
|
|
|
| Europe |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Discounted cash flow sensitivity analysis discount rate rncrease |
1.00%
|
|
|
| Customer lists | Institutional Products Group |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Impairment of finite-lived intangible assets |
|
|
12,826,000
|
| Noncompete Agreements | Institutional Products Group |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Impairment of finite-lived intangible assets |
|
|
215,000
|
| Foreign exchange forward |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Gain (Loss) |
$ 2,573,000
|
$ 1,112,000
|
$ 338,000
|