Revenue from Contracts with Customers - Financial Statement Impact of Adopting ASC 606 (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Balance Sheet
Unbilled receivable	$ 13,958,000		$ 13,958,000		$ 5,119,000	$ 0
Inventories	40,808,000		40,808,000		33,040,000	33,793,000
Prepaid expenses and other current assets	17,559,000		17,559,000		15,517,000	9,949,000
Total current assets	421,793,000		421,793,000		547,105,000	537,171,000
Other assets	2,486,000		2,486,000		15,295,000	1,969,000
Total assets	838,856,000		838,856,000		840,004,000	816,744,000
Deferred revenue	2,338,000		2,338,000		4,981,000	2,356,000
Total current liabilities	76,109,000		76,109,000		88,650,000	86,025,000
Other long-term liabilities	6,480,000		6,480,000		6,301,000	6,030,000
Total liabilities	659,708,000		659,708,000		661,124,000	658,228,000
Accumulated deficit	(695,166,000)		(695,166,000)		(686,906,000)	(707,255,000)
Total stockholders' equity	179,148,000		179,148,000		178,880,000	158,516,000
Total liabilities and stockholders' equity	838,856,000		838,856,000		840,004,000	816,744,000
Statement of Operations
Revenue	124,262,000	$ 109,756,000	247,840,000	$ 211,469,000
Cost of revenue	42,190,000	45,117,000	89,953,000	87,432,000
Gross profit	82,072,000	64,639,000	157,887,000	124,037,000
Sales and marketing	35,605,000	29,475,000	67,738,000	57,570,000
Total operating expenses	77,747,000	67,997,000	153,562,000	132,703,000
Operating income (loss)	4,325,000	(3,358,000)	4,325,000	(8,666,000)
Nonoperating Income (Expense)	(5,604,000)	(4,308,000)	(11,840,000)	(8,881,000)
Loss before income taxes	(1,279,000)	(7,666,000)	(7,515,000)	(17,547,000)
Income Tax Expense (Benefit)	412,000	101,000	745,000	197,000
Net loss	$ (1,691,000)	$ (7,767,000)	$ (8,260,000)	$ (17,744,000)
Net loss from continuing operations per share basic and diluted (in dollars per share)	$ (0.03)	$ (0.13)	$ (0.14)	$ (0.31)
Statement of Cash Flows
Non-cash interest expense	$ 7,264,000	$ 4,072,000	$ 14,427,000	$ 8,067,000
Accounts receivable and unbilled receivable			7,217,000	9,630,000
Inventories			(7,959,000)	1,527,000
Prepaid expenses and other assets			(4,823,000)	(1,662,000)
Accounts payable, accrued expenses and other current liabilities			(17,873,000)	(7,408,000)
Deferred revenue			(2,626,000)	44,000
Other long-term liabilities			232,000	477,000
Net cash used in operating activities			(10,395,000)	(3,871,000)
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Balance Sheet
Unbilled receivable	(13,958,000)		(13,958,000)		5,119,000
Inventories	2,103,000		2,103,000		(753,000)
Prepaid expenses and other current assets	(6,554,000)		(6,554,000)		5,568,000
Total current assets	(18,409,000)		(18,409,000)		9,934,000
Other assets	(15,491,000)		(15,491,000)		13,326,000
Total assets	(33,900,000)		(33,900,000)		23,260,000
Deferred revenue	(854,000)		(854,000)		2,625,000
Total current liabilities	(854,000)		(854,000)		2,625,000
Other long-term liabilities	(270,000)		(270,000)		271,000
Total liabilities	(1,124,000)		(1,124,000)		2,896,000
Accumulated deficit	(32,786,000)		(32,786,000)		20,349,000
Total stockholders' equity	(32,776,000)		(32,776,000)		20,364,000
Total liabilities and stockholders' equity	(33,900,000)		(33,900,000)		$ 23,260,000
Statement of Operations
Revenue	(9,056,000)		(10,611,000)
Cost of revenue	(1,283,000)		(1,351,000)
Gross profit	(7,773,000)		(9,260,000)
Sales and marketing	736,000		3,173,000
Total operating expenses	736,000		3,173,000
Operating income (loss)	(8,509,000)		(12,433,000)
Loss before income taxes	(8,509,000)		(12,433,000)
Net loss	$ (8,509,000)		$ (12,433,000)
Net loss from continuing operations per share basic and diluted (in dollars per share)	$ (0.14)		$ (0.21)
Statement of Cash Flows
Non-cash interest expense			$ 0
Accounts receivable and unbilled receivable			(8,839,000)
Inventories			(1,351,000)
Prepaid expenses and other assets			3,174,000
Accounts payable, accrued expenses and other current liabilities			0
Deferred revenue			1,771,000
Other long-term liabilities			0
Net cash used in operating activities			0
Calculated under Revenue Guidance in Effect before Topic 606
Balance Sheet
Unbilled receivable	$ 13,958,000		13,958,000			0
Inventories	40,808,000		40,808,000			33,793,000
Prepaid expenses and other current assets	17,559,000		17,559,000			9,949,000
Total current assets	421,793,000		421,793,000			537,171,000
Other assets	17,961,000		17,961,000			1,969,000
Total assets	838,856,000		838,856,000			816,744,000
Deferred revenue	2,338,000		2,338,000			2,356,000
Total current liabilities	76,109,000		76,109,000			86,025,000
Other long-term liabilities	6,480,000		6,480,000			6,030,000
Total liabilities	659,708,000		659,708,000			658,228,000
Accumulated deficit	(695,166,000)		(695,166,000)			(707,255,000)
Total stockholders' equity	179,148,000		179,148,000			158,516,000
Total liabilities and stockholders' equity	838,856,000		838,856,000			$ 816,744,000
Statement of Operations
Revenue	124,262,000		247,840,000
Cost of revenue	42,190,000		89,953,000
Gross profit	82,072,000		157,887,000
Sales and marketing	35,605,000		67,738,000
Total operating expenses	77,747,000		153,562,000
Operating income (loss)	4,325,000		4,325,000
Loss before income taxes	(1,279,000)		(7,515,000)
Net loss	$ (1,691,000)		$ (8,260,000)
Net loss from continuing operations per share basic and diluted (in dollars per share)	$ (0.03)		$ (0.14)
Statement of Cash Flows
Non-cash interest expense			$ 38,131,000
Accounts receivable and unbilled receivable			7,217,000
Inventories			(7,959,000)
Prepaid expenses and other assets			(4,823,000)
Accounts payable, accrued expenses and other current liabilities			(17,873,000)
Deferred revenue			(2,626,000)
Other long-term liabilities			232,000
Net cash used in operating activities			(10,395,000)
Pro Forma
Balance Sheet
Unbilled receivable	$ 0		0
Inventories	42,911,000		42,911,000
Prepaid expenses and other current assets	11,005,000		11,005,000
Total current assets	403,384,000		403,384,000
Other assets	2,470,000		2,470,000
Total assets	804,956,000		804,956,000
Deferred revenue	1,484,000		1,484,000
Total current liabilities	75,255,000		75,255,000
Other long-term liabilities	6,210,000		6,210,000
Total liabilities	658,584,000		658,584,000
Accumulated deficit	(727,952,000)		(727,952,000)
Total stockholders' equity	146,372,000		146,372,000
Total liabilities and stockholders' equity	804,956,000		804,956,000
Statement of Operations
Revenue	115,206,000		237,229,000
Cost of revenue	40,907,000		88,602,000
Gross profit	74,299,000		148,627,000
Sales and marketing	36,341,000		70,911,000
Total operating expenses	78,483,000		156,735,000
Operating income (loss)	(4,184,000)		(8,108,000)
Loss before income taxes	(9,788,000)		(19,948,000)
Net loss	$ (10,200,000)		$ (20,693,000)
Net loss from continuing operations per share basic and diluted (in dollars per share)	$ (0.17)		$ (0.35)
Statement of Cash Flows
Non-cash interest expense			$ 38,131,000
Accounts receivable and unbilled receivable			(1,622,000)
Inventories			(9,310,000)
Prepaid expenses and other assets			(1,649,000)
Accounts payable, accrued expenses and other current liabilities			(17,873,000)
Deferred revenue			(855,000)
Other long-term liabilities			232,000
Net cash used in operating activities			(10,395,000)
U.S. Omnipod
Statement of Operations
Revenue	$ 78,047,000	65,361,000	148,319,000	125,016,000
U.S. Omnipod | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Statement of Operations
Revenue	77,000		126,000
U.S. Omnipod | Calculated under Revenue Guidance in Effect before Topic 606
Statement of Operations
Revenue	78,047,000		148,319,000
U.S. Omnipod | Pro Forma
Statement of Operations
Revenue	78,124,000		148,445,000
International Omnipod
Statement of Operations
Revenue	28,509,000	26,575,000	66,913,000	51,719,000
International Omnipod | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Statement of Operations
Revenue	(621,000)		(1,898,000)
International Omnipod | Calculated under Revenue Guidance in Effect before Topic 606
Statement of Operations
Revenue	28,509,000		66,913,000
International Omnipod | Pro Forma
Statement of Operations
Revenue	27,888,000		65,015,000
Drug Delivery
Statement of Operations
Revenue	17,706,000	$ 17,820,000	32,608,000	$ 34,734,000
Drug Delivery | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Statement of Operations
Revenue	(8,512,000)		(8,839,000)
Drug Delivery | Calculated under Revenue Guidance in Effect before Topic 606
Statement of Operations
Revenue	17,706,000		32,608,000
Drug Delivery | Pro Forma
Statement of Operations
Revenue	$ 9,194,000		$ 23,769,000