Transactions with Related Parties - Variable Interest Entities (Details) - Variable Interest Entity, Not Primary Beneficiary [Member] - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Variable Interest Entity [Line Items] | |||
| Total assets | $ 196,000 | $ 134,000 | |
| Total liabilities | 2,829,000 | 2,522,000 | |
| Maximum exposure to loss | 0 | 0 | |
| Related party sales | 1,900,000 | 1,500,000 | $ 962,000 |
| Accounts Receivable - Related Party [Member] | |||
| Variable Interest Entity [Line Items] | |||
| Total assets | 196,000 | 134,000 | |
| Maximum exposure to loss | 0 | 0 | |
| Deferred Revenue, Current Portion - Related Party [Member] | |||
| Variable Interest Entity [Line Items] | |||
| Total liabilities | 1,287,000 | 591,000 | |
| Maximum exposure to loss | 0 | 0 | |
| Deferred Revenue, Noncurrent Portion - Related Party [Member] | |||
| Variable Interest Entity [Line Items] | |||
| Total liabilities | 1,542,000 | 1,931,000 | |
| Maximum exposure to loss | $ 0 | $ 0 | |