Dining rooms are poised to return to corporate-owned Steak 'n Shake locations, but not the full service fans of the steakburger are accustomed. The announcement comes on the heels of Biglari Holdings — Steak ‘n Shake’s parent company since 2008 — paying off $153 million in the brand’s term debt to keep the classic, full-service burger joint from being forced into bankruptcy. “A conversion to a bonafide quick-service restaurant chain will, we believe, enhance the company’s economics ...” Biglari Holdings chairman and CEO Sardar Biglar wrote in an annual letter to shareholders dated Feb. 26. “Although most of our dining rooms are currently closed, we are not dispensing with them all together. Rather, we intend to equip units with advance self-service. ... Instead of ordering at the table, or even the counter with an attendant, our guests will now initiate their transaction at a kiosk.”