Description of Business and Significant Accounting Policies - Additional Information (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended
	Mar. 31, 2014 Segment	Mar. 31, 2014
Summary Of Significant Accounting Policy [Line Items]
Aggregate number of shares of common stock upon conversion of preferred stock		38,065,708
Number of operating segments as result of acquisitions	1
Maximum
Summary Of Significant Accounting Policy [Line Items]
Percentage of revenues generated outside of the United States of America	1.00%
Initial Public Offering
Summary Of Significant Accounting Policy [Line Items]
Initial public offering shares issued and sold	15,000,000
Public offering share price	$ 16.00	$ 16.00
Proceeds from initial public offering net of underwriting discounts, commissions and offering expenses	$ 218.0
Underwriting discounts and commissions	16.8
Offering expenses	$ 5.3
Aggregate number of shares of common stock upon conversion of preferred stock	38,065,708
Initial Public Offering | Additional Issuance
Summary Of Significant Accounting Policy [Line Items]
Initial public offering shares issued and sold	2,250,000