v3.8.0.1

Earnings per Share - Summary of Components used in Calculation of Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basic earnings:
Net earnings attributable to Broadstone Net Lease, Inc	$ 15,530	$ 11,948	$ 14,727	$ 12,594	$ 12,480	$ 13,958	$ 4,818	$ 5,098	$ 54,799	$ 36,354	$ 19,287
Diluted earnings:
Net earnings attributable to Broadstone Net Lease, Inc	15,530	11,948	14,727	12,594	12,480	13,958	4,818	5,098	54,799	36,354	19,287
Net earnings attributable to non-controlling interests	$ 1,296	$ 1,042	$ 1,265	$ 1,153	$ 1,314	$ 1,459	$ 538	$ 603	4,756	3,914	1,603
Net income (loss) attributable to parent, Diluted									$ 59,555	$ 40,268	$ 20,890
Basic and diluted weighted average shares outstanding:
Basic	18,515	17,617	16,623	15,582	14,497	13,647	12,766	11,802	17,084	13,178	8,989
Effects of convertible membership units									1,483	1,419	747
Weighted average number of common shares outstanding used in diluted earnings per share	20,096	19,147	18,051	17,009	15,924	15,074	14,193	13,196	18,567	14,597	9,736
Basic and diluted	$ 0.84	$ 0.68	$ 0.89	$ 0.81	$ 0.86	$ 1.02	$ 0.38	$ 0.43	$ 3.21	$ 2.76	$ 2.15

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- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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