Due to Shareholders of Acquired Companies - Additional Information (Details) - 3 months ended Jun. 30, 2017 - IADE Group € in Thousands, $ in Thousands	USD ($) tranche	EUR (€) tranche
Business Acquisition [Line Items]
Number of payment tranches \| tranche	2	2
Payment tranche, value \| €		€ 1,000
Payment term for tranche one	36 months	36 months
Payment term for tranche two	60 months	60 months
Notes Payable
Business Acquisition [Line Items]
Liability settled	$ 694	€ 639

The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Name:	us-gaap_RepaymentsOfRelatedPartyDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration