Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Customers with Revenues Greater than 10%

The following table presents customers with revenues greater than 10% of the Company’s consolidated total revenues for the periods shown:

	Years ended December 31,
	2013			2012			2011
Caterpillar Inc.		17.3	%		17.7	%		21.7	%
Komatsu Ltd.		12.1	%		12.0	%		14.7	%
Hitachi Construction Machinery Co., Ltd.		*			*			10.2	%

* Balance is less than 10% of consolidated revenues.

Customers with Accounts Receivable Greater than 10%

The following table presents customers with accounts receivable greater than 10% of the Company’s consolidated accounts receivable for the periods shown:

	December 31,
	2013			2012
Caterpillar Inc.		20.9	%		24.2	%