Acquisitions - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Oct. 26, 2016	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Business Acquisition [Line Items]
Cash paid					$ 2,600	$ 0
Goodwill		$ 55,703	$ 55,703		$ 55,703		$ 51,248
Effective income tax rate (as a percent)			28.20%	33.90%	30.40%	35.00%
RtTech Software, Inc. [Member]
Business Acquisition [Line Items]
Consideration transferred		12,000
Cash paid		10,800
Future contingent consideration payment		1,200	$ 1,200		$ 1,200
Finite-lived intangible assets acquired		8,000	8,000		8,000
Goodwill		4,000	4,000		4,000
Mtelligence Corporation
Business Acquisition [Line Items]
Consideration transferred	$ 37,400
Cash paid	31,900
Future contingent consideration payment	5,500
Fair value of contingent consideration	$ 5,300
Goodwill		25,888	25,888		$ 25,888
Weighted average discount rate (as a percent)					19.00%
Effective income tax rate (as a percent)					34.00%
Developed Technology Rights | RtTech Software, Inc. [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life					7 years
Developed Technology Rights | Mtelligence Corporation
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		11,385	11,385		$ 11,385
Finite-lived intangible asset, useful life					12 years
Customer Relationship | Mtelligence Corporation
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		679	679		$ 679
Finite-lived intangible asset, useful life					6 years
Non-compete Agreements | Mtelligence Corporation
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 553	$ 553		$ 553
Finite-lived intangible asset, useful life					3 years