Significant Accounting Policies (Details 3)	12 Months Ended
	Dec. 31, 2016
Customer relationships
Goodwill and intangible assets [Line items]
Useful life	14 years 8 months 12 days
Other intangible assets
Goodwill and intangible assets [Line items]
Useful life	8 years 8 months 12 days
Minimum | Customer relationships
Goodwill and intangible assets [Line items]
Useful life	3 years
Minimum | Other intangible assets
Goodwill and intangible assets [Line items]
Useful life	3 years
Maximum | Customer relationships
Goodwill and intangible assets [Line items]
Useful life	19 years
Maximum | Other intangible assets
Goodwill and intangible assets [Line items]
Useful life	19 years