|
Concentration Risk - Additional Information (Details) (Customer Concentration Risk [Member])
|
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Mar. 31, 2015
customer
|
Mar. 31, 2014
customer
|
Dec. 31, 2014
customer
|
|
|
Sales [Member]
|
|||
| Concentration Risk [Line Items] | |||
| Concentration risk, number of customers | 1 | 1 | |
| Concentration risk, percentage, period | 35.00% | 33.00% | |
|
Accounts Receivable [Member]
|
|||
| Concentration Risk [Line Items] | |||
| Concentration risk, number of customers | 1 | 1 | |
| Concentration risk, percentage | 25.00% | 17.00% | |