Revenue is recognized for manufactured parts at a point in time, generally when products are shipped or delivered. The Company usually enters into agreements with customers to produce products at the beginning of a vehicle’s life. Blanket purchase orders received from customers and related documents generally establish the annual terms, including pricing, related to a vehicle model. Customers typically pay for parts based on customary business practices with payment terms generally between 30 and 90 days.

Revenue by customer group for the three months ended June 30, 2019 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Automotive	$	368,953	$	189,160	$	118,509	$	25,027	$	701,649
Commercial	5,927		7,872		17		60		13,876
Other	29,983		19,185		77		36		49,281
Revenue	$	404,863	$	216,217	$	118,603	$	25,123	$	764,806

Revenue by customer group for the six months ended June 30, 2019 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Automotive	$	805,819	$	414,611	$	245,907	$	48,219	$	1,514,556
Commercial	12,266		16,297		17		83		28,663
Other	61,485		39,908		174		58		101,625
Revenue	$	879,570	$	470,816	$	246,098	$	48,360	$	1,644,844

Revenue by customer group for the three months ended June 30, 2018 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Automotive	$	465,384	$	247,656	$	147,993	$	23,412	$	884,445
Commercial	5,746		9,557		1		95		15,399
Other	6,478		21,911		—		29		28,418
Revenue	$	477,608	$	279,124	$	147,994	$	23,536	$	928,262

Revenue by customer group for the six months ended June 30, 2018 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Automotive	$	954,121	$	508,312	$	297,162	$	49,862	$	1,809,457
Commercial	11,099		19,137		7		240		30,483
Other	11,566		44,076		—		71		55,713
Revenue	$	976,786	$	571,525	$	297,169	$	50,173	$	1,895,653

The automotive group consists of sales to automotive OEMs and automotive suppliers, while the commercial group represents sales to OEMs of on- and off-highway commercial equipment and vehicles. The other customer group includes sales related to specialty and adjacent markets.

Substantially all of the Company’s revenues were generated from sealing, fuel and brake delivery, fluid transfer and anti-vibration systems for use in passenger vehicles and light trucks manufactured by global OEMs. On April 1, 2019, the Company completed the divestiture of its anti-vibration systems product line. See Note 4. "Divestiture".

A summary of the Company’s products is as follows:



Product Line		Description
Sealing Systems		Protect vehicle interiors from weather, dust and noise intrusion for improved driving experience; provide aesthetic and functional class-A exterior surface treatment
Fuel & Brake Delivery Systems		Sense, deliver and control fluids to fuel and brake systems
Fluid Transfer Systems		Sense, deliver and control fluids and vapors for optimal powertrain & HVAC operation
Anti-Vibration Systems (Divested on April 1, 2019)		Control and isolate vibration and noise in the vehicle to improve ride and handling

Revenue by product line for the three months ended June 30, 2019 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Sealing systems	$	143,010	$	143,988	$	78,303	$	19,016	$	384,317
Fuel and brake delivery systems	123,978		31,023		26,309		6,044		187,354
Fluid transfer systems	114,381		21,514		13,980		63		149,938
Anti-vibration systems	—		158		11		—		169
Other	23,494		19,534		—		—		43,028
Consolidated	$	404,863	$	216,217	$	118,603	$	25,123	$	764,806

Revenue by product line for the six months ended June 30, 2019 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Sealing systems	$	299,526	$	299,548	$	163,793	$	36,844	$	799,711
Fuel and brake delivery systems	255,681		66,321		51,500		11,379		384,881
Fluid transfer systems	227,829		44,312		29,341		137		301,619
Anti-vibration systems	56,457		20,807		1,464		—		78,728
Other	40,077		39,828		—		—		79,905
Consolidated	$	879,570	$	470,816	$	246,098	$	48,360	$	1,644,844

Revenue by product line for the three months ended June 30, 2018 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Sealing systems	$	165,872	$	175,637	$	116,484	$	17,479	$	475,472
Fuel and brake delivery systems	139,308		36,661		24,234		5,973		206,176
Fluid transfer systems	107,495		23,055		5,042		84		135,676
Anti-vibration systems	64,751		20,567		2,234		—		87,552
Other	182		23,204		—		—		23,386
Consolidated	$	477,608	$	279,124	$	147,994	$	23,536	$	928,262

Revenue by product line for the six months ended June 30, 2018 was as follows:



	North America		Europe		Asia Pacific		South America		Consolidated
Sealing systems	$	338,683	$	360,089	$	234,374	$	37,388	$	970,534
Fuel and brake delivery systems	278,109		75,614		46,329		12,576		412,628
Fluid transfer systems	227,168		46,064		11,656		209		285,097
Anti-vibration systems	132,272		41,749		4,810		—		178,831
Other	554		48,009		—		—		48,563
Consolidated	$	976,786	$	571,525	$	297,169	$	50,173	$	1,895,653

The amount of revenue recognized is usually based on the purchase order price and adjusted for variable consideration, including pricing concessions. The Company accrues for pricing concessions by reducing revenue as products are shipped or delivered. The accruals are based on historical experience, anticipated performance and management’s best judgment. The Company also generally has ongoing adjustments to customer pricing arrangements based on the content and cost of its products. Such pricing accruals are adjusted as they are settled with customers. Customer returns are usually related to quality or shipment issues and are recorded as a reduction of revenue. The Company generally does not recognize significant return obligations due to their infrequent nature.

The Company’s contract assets consist of unbilled amounts associated with variable pricing arrangements in its Asia Pacific region. Once pricing is finalized, contract assets are transferred to accounts receivable. As a result, the timing of revenue recognition and billings, as well as changes in foreign exchange rates, will impact contract assets on an ongoing basis. Changes during the six months ended June 30, 2019 were not materially impacted by any other factors.

The Company’s contract liabilities consist of advance payments received and due from customers. Net contract assets (liabilities) consisted of the following:



	June 30, 2019			December 31, 2018			Change
Contract assets	$	3,997		$	14,757		$	(10,760	)
Contract liabilities	(55		)	(143		)	88
Net contract assets	$	3,942		$	14,614		$	(10,672	)